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Politics : The Environmentalist Thread

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To: Wharf Rat who wrote (10398)3/14/2007 5:09:47 PM
From: Maurice Winn  Read Replies (1) of 36917
 
Thanks Wharfie. But why just look at the last short period of life on Earth? 650,000 years is hardly more than yesterday.

If you look at the graph of CO2 levels on Earth, that's just the last instant. If you keep going back, you will find a continuing trend [as you go backwards] of increasing CO2 to 1600 ppm and higher during the Jurassic times when animals were bounding galore. Earth was [mostly] a lot warmer and nicer than now.

The big driver of climate is snow on land and associated cloud with low temperature, but with chlorophyll cover due to trees having an impact too, not to mention the gamma ray influence on clouds and sunspots and various other matters such as cyclic CO2 eruptions from volcanoes due to variable subduction of organic matter at different times.

Plate tectonics moves continents around and when they are further from the equator, they are able to support snow. When there is more ocean surrounding poles, the convection currents limit ocean ice cover so reflection is limited and there's more ocean to absorb light and do heating. Land of desert type is very reflective compared with ocean. Green land is more reflective than ocean.

Do you see?

Mqurice
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